Respiratory system anatomy and physiology: Video
Since the lungs process air, they are the only internal organs that are constantly exposed to the external environment Central to the human respiratory system
Respiratory System respiratory system Since the lungs process air, they are the only internal organs that are constantly exposed to the external environment Central to the human respiratory system operating system The respiratory system takes up oxygen from the air we breathe and expels the unwanted carbon dioxide
immune system Human respiratory system, the system in humans that takes up oxygen and expels carbon dioxide The major organs of the respiratory system
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